Eagle, it is more a matter of lowering the resonance frequency of the system. Even a nice and heavy tripod can benefit from a hook to hang the camera bag from at some shutterspeeds, different from tripod to tripod.
Rob, the 055 series is a good choice if you like the snap locks on the legs. See if you can try before you buy. I personally don't get 3-way heads but that is a matter of preference.